How to Solve Thermodynamics Problems when an Ideal Gas Undergoes Reversible Cyclic Process – Part 1

The first law of thermodynamics states that, when energy passes into or out of a system (as work, heat, or matter), the system's internal energy changes in accordance with the law of conservation of energy.


In thermodynamics the reference is the internal energy (in chemistry). Anything that increases internal energy is positive and that decreases internal energy is negative.

Question:

2 mol of Helium gas undergo a reversible cyclic process as shown in the figure below. Assuming the gas to be ideal, what is the work for the process C to D?



Click to enlarge the image

Solution:



Click to enlarge the image

Tremendously tempting thermodynamics ❓ Let Chemaficionado know at mychemistryhomework@gmail.com❗

References:
(1)    Wikipedia Contributors. Laws of thermodynamics. Wikipedia. https://en.wikipedia.org/wiki/Laws_of_thermodynamics.

(2)    Ncert. Chemistry : Textbook for Class XI - Part.I; National Council Of Educational Research And Training: New Delhi.

(3)    Internal energy. Wikipedia. https://en.wikipedia.org/wiki/Internal_energy

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